British citizenship after ILR: when to apply and how absences are counted

The 12-month wait on the five-year route

If you are applying on the five-year route, you must usually have held indefinite leave to remain or settled status for at least 12 months before applying. Spouses and civil partners of British citizens applying on the three-year route do not have to wait 12 months — they can apply as soon as they hold settlement, provided the other requirements are met.

Physical presence at the start of the qualifying period

You must have been physically present in the UK exactly five years (or three years on the spouse route) before the date the Home Office receives your application. If you were abroad on that exact day, the application can be refused even if every other requirement is met, so the application date needs choosing with care.

The absence limits

In general terms, absences must not exceed 450 days in the five-year qualifying period, or 270 days in the three-year spouse period, and must not exceed 90 days in the final 12 months before applying. Whole days of travel — the day you leave and the day you return — are not normally counted as absences.

How absences are evidenced

Absences are calculated from passports, travel records and, where relevant, employer letters confirming work trips. A list reconstructed from memory that does not match the stamps in your passports is a common cause of delay and refusal. Where absences exceed the limits, the Home Office has discretion in some circumstances, but discretion is never guaranteed and needs a persuasive, evidenced explanation.

Timing mistakes we see most often

• Applying before the 12-month post-settlement wait is complete on the five-year route
• Choosing an application date without checking where you were exactly five or three years earlier
• Underestimating absences because short trips were not recorded
• Assuming settled status under the EU Settlement Scheme follows different absence rules — it does not

Where a solicitor helps

A solicitor calculates the qualifying period and absences from your documents, advises on the right application date, and prepares written submissions where discretion is being asked for. If the timing is wrong, we will tell you to wait rather than let you pay for an application that is likely to be refused.